I thought I had blogged this in the past, but when searching this blog to refresh myself I couldn’t find anything. So I had to figure it out all over again.
When making Graph API calls from Power Automate the connect you must use is the HTTP with Azure AD.
Fill both the fields with “https://graph.microsoft.com/” and Sign in.
That’s it. Then you can fill in the Method and URL and make Graph queries.
This might have some limitations. I have only used it for users, applications, and groups. Am guessing the underlying SPN used by this connector might need more rights for other objects… or maybe not.
A previous post talks about using this for accessing Key Vaults.